 (defmulti emit* :op)
 
 (defn emit [ast]
-  (env/ensure
+  (ensure
     (when *source-map-data*
       (let [{:keys [env]} ast]
         (when (:line env)

     "Return true if the src file requires compilation."
     ([src dest] (requires-compilation? src dest nil))
     ([^File src ^File dest opts]
      (env/ensure
        (or (not (.exists dest))
            (> (.lastModified src) (.lastModified dest))
            (let [version' (util/compiled-by-version dest)

   (defn compile-file*
     ([src dest] (compile-file* src dest nil))
     ([src dest opts]
      (ensure
        (with-core-cljs opts
          (fn []
            (when (or ana/*verbose* (:verbose opts))
